Device for the manufacture of doweled wooden boards



Nov. 4, 1930. H. SCHEIDEMANDEL 1,780,721

DEVICE FOR THE MANUFACTURE OF DOWELED WOODEN BOARDS Filed June 1.1927 sSheets-Sheet 1 ale 18221112188 1% 318? E2 1 HANS'S'CHEIDEMANDLL Nov. 4,1930.

HySCHElDE MANDEL DEVICE FOR THE MANUFACTURE OF DOWELED WOODE BOARDSF'iledJune 1. 1927 s Sheets-Sheet 2 L W i- :iimmmeii: mm Mm I A O||!|ll||||:l |i|v|l|1| |||||||||i||||||||| M T I W- N lll lII-l m W Am aN l I I l I I I l II a. M .l. m m

Nov. 4, 1930. 1,780,721

DEVICE: FOR THE MANUFACTURE OF'DOWELED WOODEN BOARDS- H.SCHHDEMANDELFiled June 1, 1927 6 Sheets-Sheet 3 5% N Aw SLHUDEMANDEL Nov. 4, '1930.H. SC HEIDEMANDEL 1,780,721

DEVICE FOR THE MANUFACTURE OF DOWELED WOODEN BOARDS Filed June 1, 1927 6Sheets-Sheet 4 HANS 5Ct' iE\DEMANDEL INVENTOR;

By" a Mwrnay,

Nov. 4, 1930 1 H. SCHEIDEMANDEL 1,730,721

DEVICE FOR THE MANUFACTURE OF DOWELED WOODEN BOARDS Filed June 1, 1927 aShets-Sheet 5 HANS SCH EIYDEMAN DEL mv a N 'r or-z:

Nov. 4, 1930. H. SCHEIDEMANDEL 1,730,721

DEVICE FOR THE MANUFACTURE OF DOWELED WOODEN BOARDS Fil ed June 1, 1927s Sheets-She et e HANfiSCHEIDEMANDEL I V EN TO B, Attorne -20 wood.

Patented Nov. 4,h1"9 30 j V I l HANS SCHEibEMANDELDF,MUQTICH GEBMANY v vDEVICEFORTHE MAN FAcTUBE-ornowELE-n wooi uu BOARDS Application'fiIedJ'uneI, 1927, Serial 2N ieaaz aa a 111 mtnym j 12, 1926.

'The above invention represents a device of tongs. 'Shanks S and 9- arelinked "to both for the manufacture of dowled wooden sides of piece 7,the shanks 'supplementingin boards and has 'for'its main object to avoidupturned position pie'ce 7 in regardto the the entrance of the dowelsinto the boards width or" slide pieces, the bite otton s 6. r

. to'be joined in-an unequal manner. I This has having notches 7 and 8extending to both 55";

beenthecas e very oftenup to now, especially sides. The guidance fof theslide piece] is 7 when the boardst werejof 'di-fi erent hardness broughtabout 'by rails .10, the upper ends.

' in which casethej'dow'els would naturally of which are bent. Shank 43otthetongs is enter the soft wood more easily than the worked by apressure bar 11, which is linked v 10 woodof greater hardness; a toanarm i 12 .of the slide piece 3 and re so;

The device in question is based principally moved fromthe slide piece' 3by therpressu-re upon an arrangement by means of whic lithe oftaspring'l3. The tree end'of the pressure dowels are brought between theboards to be; bar 1'l=isworking in a reciprocating sense:

joined by a kind of clamping tongs and are on a rigidly controlledpressure table 15by held in this position, so that the dowels canmeansof a travelling 'ballll i; zlh'e figure as not be'pushed out of thetongsduringithe shows the upper positionlof the slide piece;

first part of the compressing of the boards, the lower positionbeingrmarked-bydotted and consequently will penetrate the boards lInesytheside elevation. according toFigfi equallyindependent of the hardness ofthe shows 'the'lower position. l

' I H Theroperation of the'device:accordingsto 3?,0.

Followingis the specification of the de- Figs-4and5 is-the'ifollowing: q

i vice, which is illustrated in the accompany; A dowel 16 lying in thebite of: the tongs'zin ing drawings. Of the-latter Fig. 1 reprethe upper'position'is held clamped. by way sents a section through. B of Figure.2'; ofthe pressure,transferredthrough the :t'a-

Fig. 2 is a plan of Fig. '1; :Fig. 3 a sideblef15on'the1pressure bar 11upon the shank 7e elevation of Fig. .1; Fig. 4 a plan. of the Ofthetongs 4." The shanks 8 and -9 of the dowel casing on an enlarged scale;Fig. 5' is slide piece 3"Whl(!l1 are'swungout thereby by a -part of'th'eside elevation of Fig. 4:, Figs 6 theirown weight are lying on: the faceofarm Y a part of'a front elevationaccording to' Fig. extension '12,;50"that dowel-16 project's one 1 on :an'en'larged scale with hookup; Fig.v"7 third of its lengthen both sides of the bite so;

represents another type 'ofathe device for of the tongs. Now,whenthetable moves placing the boards upon the working base, downwardsinthe' direction of the arrow 18, shown on reduced scale; Fig. 8 isaplan the pressurec'bar 1 1 will swing Out'inthedi of;Fig. 7." p 1 Irection of the arrow. 19 worked the spring Fig; 4 shows: a "dowel:casing 1, which is 13, thereby releasing the shank 4 of the tongs s5taperedtowards the' bottomlend and providthrough its upper lever.Influenced by its ed with-aslot of eniersion 2, in front of which ownweight, the shank 4 will swingidown :in a guided slide pieceS is movablyattached. the directionof arrowlt), relea'sing thereby Thelatter is oneshank ofa pair of tongs, the fdowel I6. Theslide piece 3th-en moves -40the other shank 40f whichxis linked to the bymeansofatspring 20down'along the guidso upperend of the slide .piece 3'by means of a 'ingrails 10'as' much as is required, whereby hinge. LThe .bite oflthe tongsis marked the'shanks 8 an'di9 are caught by the rails and with the.number'S. The widthof the slide swung'upintothe plane of the slidepiece 3. piec'e3 is made to corr'espond-withthe length As SOOI'L'ZIS thebite of tongs 6 and the notches of the slot ofemersion2,.-inconsequenceof v.7 andSarriVeat the side'ofthe slot of emerwhichthe.latter isentirely covered by the sion 2,- anew. dowel will taketheplaceof the slidepiece. j The thickness of slide piece 3 previous. Also inthis positionof-the slide is; reduced on its up'perrend, making that waypiece the slot-oi emersion 2 of thecasingwill a*tl1in piece-7, of whichthe width corresponds be absolutely shut ofiifihereby -i;h u h thto'th'e width-of theothershank 4 creeper shanks 58,8,I1d'9. 'During.;thefollowin-gupwardenga e wee ing-catch $93 ,311 wattuests;

which the shaft 82-drops into the lower posi tion (Figs. Ito 3);: The shaft- 82 hasbeen provided besides with arms 96; which cooper;

ate with the pressure ta'bl e in such a way; that shaft- 82 and'thesainetiine the stops 8'5 and 86 at theen'd of the upwards motion of; thetabl'eYare raised I into the stop; piosition; whereby'the-"catch 93 willcatch again the block 94, being underthe infiueneebt its spring, andhold it that wayin this position.

The lever 8 1 has been equipped finally with an arm 97, which cooperateswith one arm 98 of a switch 99 in such a way,'that the switch 99 will beclosed, when theshaft 82 drops down. This switch isplaced'inthe'ele'ctric Circuit I, which operates the chaindrive or the electromagnetic coupling. 46. The lever 98 of the switch 99 alsoicooperateswith the table 15in such a way,'that'the switch. 99

will also be vclosed whenpthe table moves downwards. Thefswitch 99 isoperated also by a second lever "loO cooperating with the I lever-84 insuch a way, that-when lever 84 is swung out in the direction of thearrow 101, the switch 99 is opened through the influence of the power bywhich the boards'22 are com pressed. The switch 99 is'rnounted on itsro; tary axis 102-withthat great a friction, that it will rest in anyposition.

In a second electric 'circ'ult I I; which serves 1 for exciting the Ielectro magnetic "coupling 61 of the table drive, a switch'1jO3i'sarranged which is kept open contrary to the action of a spring 105through'the'pre's'sure table 15 in its uppermostposition by means of alever 104:,

Connected in parallel withswit'ch 103a sec-.

on'd switch 106 has beenjarrange'd in electric circuit II, which isclosed by 'the cross piece I movement of the table;

As may be seen especially in Fig. 3, a devi'ce has been arranged abovethe rails '23 and 241, supporting the boards22, withthe object to takeup the boards 22, which havebeen made ready for the next operation. Thisdevice is supported by bearing pedestals 111 and 112. In these latterbearing pedestals the bolts 113 are guided'in a movable manner, theinner ends being equipped with supporting frames 114. The supportingframes 114 are stayed against the bearing 112 bymeans I o f press'uresprings; The outer ends of the 15 616 113 at tent adv-vs in form ofhears aedserve for" the grip er the longer arms of I Ithe;revolving'angle1eversf1I6J, The-axis of rotation ofthe revolvingdangle levers is marke withithe number 117:; s e-shorter arms 1 18-ofthe;revolving angle levers; cea

operate with table 15 in. such" a way, that,l

when thetableinoves up, theangle levers are 1 swung outward andthefranies 11%1 aredrawii that far' asunder, contraryto'the' actionofthesprings, 113, whereby-the boards22, lying rails 23 midst. Afterth'egtable 15' has assed I the lever arms 118; the frames 'll lwillreturii to the starting position by means ofthe' work- 3 I a I I ingpow er of the spring 1113; so thatfother boards can be placed upon'sa'rne. "Thework ing ends of thelevers 118'a're constructedas catches119, which give,when the table moves down, thus avoiding any influence f(opera tion) ,upon 1 the revolving levers 1 16; The

frames are provided with 't -ravellingballs 121- mounted on articulatedlevers the balls are presseddownwards'bymeans of the springs 122 againstthe boards 22,- Wh-lClif'lil this instance arejto-bel'joined thusprevent-- ing the lifting of thev boards fro'rn their s'u'p r in a e 232t d in the -P e i r ie e'ration. j

In the electriccircuitII]? Fi .1 t me motor (not shown in the drawing)[wh' rangedywhich must-be worked by hand; the

lever of theilatter is -prtvided'with'tin-elem v .7 I 'j'e'ctions 1'0ofithe themes in 1ts movement:

The operation of the device aec'ordingf to gation ,124,':"whichcooperates with thepro Figures 1 to?) and6 is thefollowing "At the begining' the dowel casings I 1" are} influenc'ed (operated) by the weights31 in thepositio'n, shown in Figil in run drawn'lines, inwhich positionthe d0wel's,-'a js as. n s'c ib some; in the discussion 3 of the Figures4 and 5, are clamped into the I I space between two boards 22 to bejoined; by

means of the slide-piece 31; In othenwordsg the position of the dowelsisfin correspond ence with the'one shown incFigr' l full drawn lines.Pressure tablejlhis then in its 'upper position 6)". The switches lO3,106 and 107 are open, switch 99iclosed; New,

"the Inoinent the switch 1'23is to be 'closethtllje' pulley 41will-start'to rotate throughthe electric' motor not shown in thedrawing-con;

trolledby thisswitch." Since the switch99fis closed, theelectro-niagnetic coupling46 of the'chain-drive hasl'beenengageth thusstarting the 3 drive of the sprocketwheel's Stir-and I mounted up'onfthe shaft 32, fover sprocket whe'elsf42 and 4 8, chain l4, shaft45fco'1 1 -A pling 46, shaft 47' and worm genes,- 49; e

: ThechainsBSand 39 s tart tofrnove in the direction'of thearrbw 2c(Fig-5 2'). The first set of projections @tOfof the chains' willtheIrebyhit upon beard-'22 on the rightymoving it I by th "rai s willmoy fl kewise;

inor tr r fiQi'the eife ofvtheweigh s'31, in j a the di e i f ip eesiir' w; t e bwe sIh tpalsQ-ilpeinfihe ef ;bQe. I(-F h s'bq zditeg h nw fit 'dbw fi s-J I Q -,We l -the .,m nf lled ctibl I 11 91:; pressupe untilithits. upon. the stopsf85 I 1 186 re i n rce f he st pr 'yk a virtuee11bit i fl erz-s r gsw (F .,6)'; -;that; r e fil et: th -T a s a e b pred I -fdur inggthe furtherg mot ioiiiofithe chains 38' end {39; wherebythe' pzilitsfoftlle dowels -p j cti g f m bofih s d of he l fp n ongs, wl il nem le bQ- h i th ard q a 1 1y: ifijleensequeneegei the e12 mpingvpew ei I ef h tongs, di ethel o elefl dam -1. pin pres urei ex wisdiupbi i l fl ds ib I. m ns Q thQ' PrQJ'Q iBi eO n yb n Y refl t th'aqtieni 'i he .bu r Pri 'e' 8 3 will givjef way efid' swing outliiithedigestion. 'ofi jarrijyv: 101. TheL s itCh-QQ willj'beiopelied ,therebythrough the ileve'rf 100, cafisihg the Y currentje cu 1 e; fleQt eme nfi T p'1ii1g te be interrupted ahelffihe' 'ehtins 38 I Y Tend ,39tejfstopl AflthesaIhe tiniei'the, w ifch T 1 s iten p mf yl l s by ro epi ce been {in its upper position; I staiits ,te moi e d wn,1-therebyreleasing] in; the first instance ere y; a tua i h I e firer n tw -1"pling fi l o f the tabIe dfiV WhQreby the' crank shafts 701 and 1 Tar e-stertedwto flkptat-gby. v meansaofvsthepower transmittedfifrkmiipulley11;"through electyoj-nia'giletic eoqplingjfil, shaft r62,ibeYel ewh eelssea-1101161,; sheikand fgwo'r fn gear 166 168.; respeetfiew 69. Thepressure tableflfi, which 'u'p'ft o now had ,,'that, While .the stepsiand '86 are moving v Vbadktbward'fche boards through flie foree Yfthefsprihgs8 9 a idlih leohsequeneepf such;

'metienjthe switch 106 islppe'ned, Jan intfir 'c uit 1 1 hi the:Coupling 6 1 ofephelt able drive.

'ChaimdI I eQ the same time the {siv it ch Y 106 is closed 0 n c'e more,thereby exeitingthe Th1; arm 9? hits lther'eb 1 upon the jf rames lllwill di p 'upOnthe' supg tab es-.1 Wei-lemme@wxII iwntWes upon the leweieng ne 1081015gt'l me swifu ch'lQ'fifj e thlls-ielosi 'gifogBu'eIanexeitingpfthe 5 1-dQ e n tifies 191w: by re son ef irbe C us{Ithe P I grS t 'h};l 6f ha f p ned it Y fe v niwf erft m ne b k :o hfiev 87wendiswit ches l06 and '10 7ferebin sefiesi "Ne mhe table la-w n,hi ge-pon th 1e r es The chains 38 and 39istart to m ve ag i u the stops85 and Whefi the pressure hes drid' gflswingbut"in,the difection}oferrew l' 101,;thejsWitchh99, will befdpeneld a second is, ic'lbsed'f.Q50. The Ffcoil s 'clisehggmjges' sen e springeat h'935L-theifebyi'eleasing'Ithelshe'ft I 22 whi hedmp oge enwith.t ts psw-1 and 8.6 into the loiwexipdsitioh,(IFigs l ahd S) 0 {I ofthe'switch9.9;; the'latt'e Y I e. -955 ireGtion of pressurefb the pm] actions 40'if I V 1.1 PreSsUfQ table; 15 has passedfthe hjwerw Positionstlartingayrea y. 1'}? its up Ward" 1 mm; level-pa stheileVergQS"without hev I ing, any effect upon same, vbeziuse'vthjelatter Y h d bee wun Q 1 2 a rexd e Qrfdaflce' withsit sj lzist'pOsitiO'nQ T he I. pressure table T h nIt pe s th wi ch-110.7 h'r g thea m 109 f It'v next hitsthe shdi t levef" arms 118 of the" f VOlving,lle'versf I116; swinging :these out-fin such 'a; manner,ithe'tlthe'bpposite l ing -1 I frames 114 are "sep arated frem'feachbthejr ehd theisupply beards ezprevi u ly pl a ce'd 7' I v. 118 arereleased by theta ble, theframes 11 1 retflrn t0;1;heir"startingposition by means' I porting rails 23 end 24. .Afterv theleve'fs .bflthe op'erqtingpowerj of the springs '115,-f V

redy t d t ake up a new supply of boards At, I e the] end 0 f:. it'slupward motion }the A pressure T 82 (the lower position of these arms isshown 'ifi dottd' linesin Fig. f6) thereby lift;

il agdfheen already'qut'o'ficurrerit thr bugh the i automatic Q'penihgOf the switch 7, .1196 Y the ehd qf itsQu pward mot-ion the pi'essil'retable-15 ope n's jth'e' switch 103 by Way offthei the .chain 38 hits nowupon, the arm12 lof the switch 123, opens this andthereby stops thedriving motor ofthe pulley 41.

The device will thentake again its starting position, and the operation,can be started 'shiftable by the boards,-as pressed, so-xthat, Theframes l-l l-for-stor ng the supply of? over again;

boards 22 for the next operation to follow, need only be used for suchboards, which had not been sorted before according to their width. Forboards whichhave been assorted according to their width,"the deviceshown in Fig. 7' will be employed. .The-supply boards 22"are piled thereinstoragelcases 125, which are provided with templ'ets 126,011 thebottom in such a way, that always the underi'nost I board can beshovedoutuponthe rails23 and 24:. This motion is .causedby a bar .127,"-

which, controlled by constrained movement,

travels to and:fro. Duringitsmovement in the direction of 'thearrow'128the bar 127 catches a the undermostgboard of each casing 125, proceedingto, its outermost position on J the right and shoving thereby the boardsup on the rails 23 and 24, On its way the bar 127" passesover bridges129,which are loaded by weights 129 and after being .released by thebar,wil1 swingback into the position, shown in Fig. 7 in fullj' drawnlinesw-On'its. way back in the direction ofthe arrow 130 the bar 127 isdirected .through the: then open bridges 129 into shunts 131, which-.form a passage underneatlr'the storage casing 125. 'j

On leaving the switches the bar 127 will raise bridges 132, whichconsequence oftheir I weight under normal-conditions will take theposition shown in Fig. 7 in full drawn lines, dropping back into thisposition after being released by the bar. l

, The 'undermostiboards 22' "have the -m'eantifm'e proceeded into therange of the templets' 126, so that these are caughtjonthe nextfollowing operatingstroke of the; 'bar 127. 4

1 In the; appended claimsthe term fixedp osition as applied to thedowels'is' used to indicate that the dowels areso held 'asto beimmovable axially, radiallyvand circumferentially. V I-claimz' i -1. Anapparatuszfor thel manufacture .of

'doweled wooden plates from boards comprising means for holding saidboards inthe same 1plane,'mea ns for-pressing said boards together, andreleasable means adapted to .hold a dowel immovable relative to thedowel holding means against theu'pressure trans- 'mitted throughthe'boards and mounted to be sponding distance'into the opposing board.

2.;In an apparatus for themanufactureof doweledi woodenplates fromboards, in combination, means for holding saidxboar'ds in the sameplane, means, 'for pressing said. boards together, releasable meansadapted to f 7 hold adowel immovable relative to the dowel holding meansagainst the pressure'trans mitted through the boards and mounted to berespondingdistance into the opposing;board,. meansrindependent of theboard being joined for removing said; holding means from be-{- tweensaid boards, andmeans for completthe. same plane, means for pressingsaid boards together, vertically adjustable and horizontally, shiftable.means for holding dowels. between said boards andipre'venting;

longitudinal movement 1 of said dowels relative tosaidholding meansduring the greater part of said pressing operation whereby said dowelsv'p'enetratefthe boards being joined equally regardless of their relativehardness,

ing said pressing operationaftersaid1 hold :ing means hasbeenremovedt 1. 3. Inan-apparatusfor the manufacture of I doweled woodenplates from boards, in com-j .55 a I ibination, means'forhQlding-saidboards in means independent of the boards being joined forremoving said holding means from be tween said boards; and meansforcompleti'ng said "pressing operation rafter Said holding means hasbeenremoved.

dowele'd'wooden plates fromboards, in ,com-

i v 4; In an apparatus for the manufactureof bination, means, forholding 'the boardsiin' the same plane comprising channel; @bar's,

chains riding in said channel bars, board engaging meanson said cha nsformovmg said boards when said chains areomoved,movable stops" mounted"adjacent, said boards and working against the movement of said chains-whereby said boards] are pressed togetheig :means; for restraining themovement of. said stops withina given pressure',;means for holda ingdowels inKa fixed'position between. saidboards, means .for actuatingsa-idchains'to move saidboards together fun-til theylcontact; said'dowel holding means whereupon con- .tinuedmovementof said chainsmovessaid movable ,ystopsf, means operated: by the. m tion ofsaid stopstostop the motion of: said chains, further means operated by theinotionjof'said stops for withdrawing said dowel holding means from between saidboards I whereupon said stops are movedbackto their original 7 positionbyjs'aid restraining means, means operated, byrsaid withdrawing 'means,forsetting'saidlchains inrmotion' whereby the 'pressing'operation iscompleted and'further motion of said chains again :movessaid stops andthe motion of said "chains is again i stopped, meansioperated'iby this:second nove'- said 'stops for Withdrawing said stops fromthefplaneofthecompieted plate,

said stops for setting the chains in motion '7 movedj'gfromthe machine;,1 i

eapply, chains riding said channel plates,

' board engaging-members'on said chains for p moving, said boards whensaid" chains are V a V p of doweledooden 7 plates from" bQ3iI dS,"1Il

*"fmoved," stops mounted adj acent, said boards chains are moved,gsaidistops being" movable 9 Y l lin-cthe plane of the-board'sandiperpendicular Y 1. 54150: :LsajidF Plane; springs Iforrestraining: 5the movement of saidxstops the'planeof said Q boards i within, Iagivenipressure, releasable- ,means for iho'ldingr said stops in: the"plane I boardsymea'nsjfor'holdingdowels inf I jaifiicedyposition.ibetween said} boards, a mo 'fltor, a; switchconnecting said moto'rfgto' 1a source "of energy, power transmissionmeans connected to said motor, 'means connecting said :chains tosaid'transmission means :Where -by isaid chains arem'oi ed andthe'i'bo'a'rdsare ressed together until they contact, said dow- *elholding means whereuponfurthergmove i menial-of ,saidi'chains moves saidstops in the.

' clamping jaws whereby" said dowelfpenetrates i each boar-dequally, andmeans for releasing .100

@plane of. said boards, means operated by the movement "of .said I stopsfor disconnecting said""'chains-'from*said power transmission -means,spring; meansior' withdrawing :said

' 7. 111 anfappar'atilsfori the w led w qdem fis r m a l a i kbination,means holding f said'fboards' ,in 1:1

' zgdowel h'oldingl meansyineans restraining the a "removalofsaidhdoweiholding means fromi 9-14 1 sal-didowels and"fOIVIQQStIDg thGaCtIOI'FOf --sa'- 1 d SpI'-1 Ilg;W1thdia W1Ilg means,. means for" -releasing said restraining means, means ope l er'ated-byf theamovement'of said stops in the plane 30f said boardsfor-"connecting" said re- ;4.leasing'fl means to said powertransmission "means whereby. 5 said(dowel iholdin'gmeans I g V iare ;withdrawnf{whereupon saidjstopsf arespring returned tokth'eir original position, v I ogmeansi loperatedby:the release ofgsaid. re- 1.straining meansfor reconnectingsaid chainswith said-'- poWer transmission m'eanswhereby" said chainsxare llset inmotion and the f pressing f operation completed, 5 whereupon s ifnrthermotionfozfi' sa'id chains-move :said

' iovablel'sto'ps in the: plane? of itheifbo'ardsria ljasec'o'nd timeand the motion ofthe -ohainsr is again stopped, means operated by the'sec ondmovementiof said stops for releasing the U ,meansholdingsaidstops in the plane or the 1 eo'boardswhereupon saidstops are Withdrawnfronisaid planQ-mean's operatedby the with draw'alfxof said; stops --foragain connecting saidchainsto saidpower transmission means 1 I "wherebythe completed plate-is removed 6 5 from saidchannel ibarsyme'ansforreturning gand means operated by"the ithdrayva1 of j-ffcooperatingwithsaid board engaging meln- "the -entrance o of more :tha on"from"betWeenlthe-boards: z

i I V j 1,780,721

' the. aforesaid idowelholder'rstrainingmeans" 1 back-to restraining post on, means operated by'thefreturn of said restraining meansqto returnsaid {stops to the 'pl'aiiejof said boards "i furthermeans operated thereturn fof'said from s ai d board supply to said! channelfb'ars i f andto' replacesaiddoWel holding means be tween said boards'; and-meansoperatedb y the continued movementof-said chainsfor openin'gthe'said'motor zswitchwhereupon the ap aratus :is ready for anothercycle of opera-1 tionsm I .r p y:

6. Ingan apparatusfor the manufacture" "combinationjmeans if'or' 1holdirigsaid "boards inthe] same ip'lane', afdowelconta iner" adj'a- 7 vl icent said boar'dsgga'n opening "in' sai'd' container Y for allowingthe e of, a d

guides. mounted-1 adjacent said container, gbai-islidablymounted onsaidguides having clampingjaws en asrr eenaa 'coveringgf sa'idl 'emersionfopeninggmeans for normally.

=hol'dingfsaidvbar- Wjit ts clamping jauis'op Q posits saidfopeningfmean's f I lsaid j aws; pressure'f means or'moving said'barifrom said opening to th'e i planeo'f said means connecting said-fpressure" i kmeansto :onelof said j awe-whereby the dowel .:95 gisfirmly'ciampiedifitheplaneof'said boards by: said pressure means meansfor pressing '5 saidboards together until "they" contact said i the-pres'sure' on said f Ws and removing them *anufactureof' the sameplanegjfmeansfforf'pres sing said b ards together; container' ifordowels mounted ad acentsaid-"boards and provided pression', means formovin said [depression 5 -W1th-its dowe1 fromsaid opening totheplane aiof said boards and means for applying pres-j sure to saidhinged memberforv clamping said 1 I dowel andjpreventing longitudinal mo've- 4 'ment"of the same insaiddepression during 11 5 the" greater part of thepresslngoperation;

whereby said dowel penetrates the boards being joined equallydregardlessof their rela V five-hardness; r V a -'8.- In anapparatusior themanufacture 0f1125 doweled Wooden plates ifromboardsgin com; T

bination,--m.eans' for holding said jboards iin the same Jpla'ne,means." for pressing said boaids' together, as container -,'f0r dowelsmounted adjacent said boards-and presided liso depression, means formoving said depression ,WllLlI IlZS dowel from said openmg to the withan opening foremitti'ng dowels, a slidably mounted bar ad ace'nt saidcontainer and covering said open ng, a depression 111 the end of saidbar for receiving a dowel from said opening, a hinged member on the endof said bar adapted to hold said dowel in said plane of said boards,-means for applying pressure to said hinged member for clamping saiddowel and preventing longitudinal movement of thesame in sa d depressiondurtion, whereby said dowel penetrates the boards being joined equallyregardless of their relative hardness, and means for releasing thepressure .on said hinged member before the said pressing operation'iscompleted, whereby said depression is free to v be returned to saidopenin in the dowel container. 9. In an apparatus for the manufacture'of doweled Wooden plates from boards, in combination, means for holdingsaid boards in the same plane, means for pressingsaid boards together, acontainer for dowels, means'for feeding said dowelsfrom saidcontainer-to the plane of said boards and releasably hold? ingsaiddowels immovable relative to the dowel holding means against thepressure transmitted through the boards, said means being mounted to beshiftable by the boards,

signature.

R. ass sormmnivnlnnnnf f] means has been removed. In testimony whereof IV the greater part of the pressing. operaas pressed, so that when thedowel has suficiently penetrated oneboard it must move therewith to acorresponding distance into the opposing board, and means for removingsaid holding means from between said boards.

10. In an apparatus for the manufacture of doweled wooden plates fromboards, in combination, means for-holding said boards in the same plane,means for pressing said boards together, a container, for dowels,

means for feeding said-dowels from said con-i tainer to the plane ofsaid boards and releasably holding said dowels immovable rela tive tothe dowel'holding means againstthe pressure transmitted through theboards, said means being mountedtobe shiftable by the boards, aspressed, so that when the'dowel has suflicientlypenetrated one board itmust move therewith to a corresponding distance. into the opposingboard, means for removing said holding means from between said boardsand means for completing said pressing operation, after saidholdingmeans has been removed.

11 In an apparatus for the manufacture of doweled wooden plates fromboards, in combination, means for holding'said boards in the same plane,means for pressing said boards together, a container for dowels,vertically adjustable and horizontally 'shiftable' means for feedingsaid dowels from saidicontainer to the plane'of said boards and"rele'asably holding said dowelsimmovable relative to the dowelholdingvmeans against the

